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STOCK OPTIONS - Summary of Restricted Stock Awards and Units Activity (Details) - Restricted Stock Awards And Units [Member] - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Number of Shares |  |
Outstanding at beginning of year (in shares) | 2,398 | 2,398
Granted (in shares) | 30,500 | 0
Exercised (in shares) | 0 | 0
Forfeited (in shares) | 0 | 0
Balance (in shares) | 32,898 | 2,398
Outstanding (in shares) | 959 | 0
Outstanding at beginning of year | $ 31.57 | $ 31.57
Granted | 30.25 | 0
Exercised | 0 | 0
Forfeited | 0 | 0
Balance | 29.43 | 31.57
Exercisable at end of period | $ 31.57 | $ 31.57

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- Definition Number of non-option equity instruments exercised by participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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